Wood burning furnace



FIG. 1 is a perspective view taken from the front, top and left side ofwood burning furnace showing our new design;

FIG. 2 is a perspective view taken from the rear, top and right sidethereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a top plan view thereof.

The ornamental design for wood burning furnace, as shown.